John h



(N 0 Model.)

J. H. MILLER 81; W. H. BURNHAM. WINDMILLBRAKE.

N0. 490,295. Patented Jan. 24-, 1893.

m: "cams Wren: c0, mom-mwcv. wnsu Uwiinn Strains JOHN II. MILLER AND WILLIAM H. BURN HAM, OF BATAVIA, ILLINOIS, AS-

SIGNORS 'TO THE UNITED STATES WIND ENGINE AND PUMP COMPANY,

OF SAME PLACE.

WINDMILL-BRAKE.

SPECIFICATION forming part of Letters Patent No. 490,295, dated January 24, 1893.

Application filed June 27, 1891.

To all whom it may concern.-

Be it known that we, JOHN H. MILLER and i-VILLIAM H. BURNHAM, citizens of the United States, residing at Batavia, in the county of Kane and State of Illinois, have invented a certain new and useful Improvement in Windmill-Brakes, which is fully set forth in the following specification, reference being had to the accompanying drawings, in which Figure 1 represents a top plan view of a wind mill with our improvement attached. Fig. 2, a side elevation of the top portion of the mill, with the hinged vane portion cut away. Fig. 3 represents a vertical section of the turn-table, taken at the line 33, Fig. 1. Fig. 4 represents a top View of a portion of the turn-table and hinged vane and wind wheel shaft, looking down from the line 4=4, Fig. 2. Fig. 5 is aside elevation of the brake shoe and its attachment, with the brake lever out in section.

The object of our invention is to make a wind mill having a spring lever which serves the purpose of carrying the brake, and at the same time serves as a spring to hold the wind wheel in wind; said spring lever being applied in a hinged vane solid wheel wind mill in such manner that when the wheel is swung around out of wind nearly or quite parallel with the vane, the brake will be applied to the crank-plate wheel and prevent the wind wheel from turning; and the spring lever which carries the brake will have tension sufficient to hold the wind wheelin wind, taking the place in that respect to what is known as a weight of varying resistance, acting to bring the wind wheel into wind when thrown out, and hold it in wind to a certain extent, the tension of the spring increasing as the wind wheel is thrown out of wind. This is important in this class of wind mills, because if the mill continues to turn when turned out of wind, the water is caused to stand in the pump and freeze in the winter, or the tank is caused to run overand make it wet and muddy around the mill in summer, or icy in winter, and it is also important that the wind wheel in this class of mills is held face to wind until the wind becomes violent, when the wheel should swing around out of wind, so as not to Serial No. 397,690. (No model.)

be injured but be brought back into wind when the wind subsides. Our spring lever brake accomplishes both of these desirable results.

Our invention consists in the construction and application of this spring lever applied so as to carry the brake, and also act to hold the wind wheel in wind and bring it back to wind.

Our wind wheel, and tower, and turn-table, and hinged tail vane are constructed in any of the well known ways of constructing solid wheel hinged tail vane wind mills.

. In the accompanying drawings, A represents thewind wheel. B, the hinged tailvane, which is hinged to the turn-table, at G, in the usual manner.

D is the wind wheel shaft. plate wheel.

F is the turn table which is supported upon the wind mill tower, at G, in any of the wellknown ways.

H is an elastic or spring brake lever, one end of which is rigidly attached to the turntable, as shown at I.

J is a wooden brake-shoe, which is secured to the brake-shoe block, K, by means of the screws, L. The wooden brake-shoe J sets in a groove, M, in the brake-shoe block K. The brake-shoe block K is secured to the brakelever, H, by means of a bolt and a nut, N, as clearly shown in Fig. 5.

O is a brake-lever guide, having an open slot on one side in which the brake lever can vibrate horizontally, but not vertically.

P is a stop which is rigidly attached to the turn-table, and against which the brake-lever strikes, as the wind wheel is turned out of wind.

Q is a link or rod which connects the free end of the brake-lever H to the tail vane hinge iron, B. This link or rod Q has a hinge or pivotal connection to the vane hinge iron, as well as to the end of the brake lever.

In this classof wind mills the tail vane stands always in line with the wind. The wind wheel shaft has hearings on the turntable and is in such a relative position to the tail vane, that the wind will cause the wind wheel to swing around laterally in the direc- E, the crank- ,tion indicated hythe errews; and there iseiso attachedto the tum-tame erred:or-eheinex E tending nearly "re theground, so that when it i is desired toswing thewind'wheel mound out "ofrjihe Willa; elperson',rhy pulling on the red 7 or chem, cad-swing the wind whee around,

' out of wind bymming the turneteh ieih the direetiou indicated; The spring leveriii hav-j I ingone end attaehedio'the tmfn-eable and the" 'I Other endmonneeted "with oer-attached to the r .ieil vane, acts; to hold the wind wheel face to:

e wind to the'desired; extent, but wili'tyieid id: ad Hit of the wimlwheei heiegswu 11g around toe ,pesiiifin nearly pareilei with the tail vane, when; the crank-piste wheel Ewill come in frictional eoniect with thehmkeendstop the "Wind wheel fromerevolving; *Wi-xen the Wind: subsides, 01 when the eord or: ehain with which ihe .wiedwheel is imfned oubof windyis re leased, ihe spria'ag'"1eveal-1T acts; te bring? :the

, ir-wheelbeek te; Wind, and in sets with gl'eater- 3 ,tenslon or fares "at that point; beesuseit rests against the step Rand isso eonstrueted ":We have shownazweighted 1ever-F,-whiehw --etteehed thehiits tension is continually in- '25 dressed as the windiwheeLsWingsaround'out;

of wind; or I J isappliedteihe mill inxithe usuai'mmmezy whiehaddsto thefemeof the spring in as sisting to bring the'wi-ed wheel :heektowind,

' asem' auxiiiary weighted iever aetsi niwind miils nowin useqfihis'we may or may not use,* as we depend upon the spring: brake; le 1 efeasec'ifereeas the wind wheel 7 out ofrwindy w Ver to eat" to holdfihe wind wheel 'iIY WiHd}, andihsisso arranged that i-ilihiitS-Wifil inn The wooden brake-shoe is attached to the brake-shoe block in such a manner that it can be adjusted in proper position to strike full face against the edge of the crank-plate Wheel, and can be readily removed when desired.

swings around; I

' I "crank plateasehe wheel swingseu-t of wind.

The slotted guide Oholds theseringhmkeb lever in position and prevents: the frietionai contaet 0f; the brake shoe with the cranks;

platewheel-frem "moving-it vertically V XVe have found 'that our spring hrakeiiever servesthe douhlepurposeof 'cerryingrehe 7r 5g end-in; menyrrespeets an, impmvemem over brake and oii' holdingthewindwheel to windi any other wind millhow muse and operation of our inventiomw haewe claim and desire to secure by LettersPetenig is:

r 1'. 111a solidwheei, hinged; mihvane "'WiIld mill c'th-e"turn-tablecarrying :the wind'rwheei" 7 s Having fully described: the ieonstmetion sheft'emd ieiivangihe tail vene"pivoted to :the turn'tebie; the spring brake lever H hzw I 60' the other end -eonneeted to the taihvane in? lightlyin tension whenfthe'whee stands ing' one end attached tothe iurmtahle '7 end feee'to wind 9; brakeiatteehediothe -spriage V lever and heid'hy it'fio-engegeawiththe (siren 1f;- rwheekonly when the wind wheel "swings ep= 'proximatelyparallel with thez teil vane; and

gages; ehe" spri 11g brake alever serving the: double pxwpose of governing'the windwheei andesn-ying the Make, as specified-.

'fZ-jfThfi "mrn ta-hle-of aexsolid wheel Wihd i will; the epringq brake iever :H,etteched 'to' r theiturmtabieg thebreke-shoe bioek K'a'ud bre-keshoe'; the guidei atiaehedte the "turn:

' table end-serving to guide thespringzbiake' lever;- theistop'i'? serving to increase the ten wsion' 'of: the Spain the crank-whee or piste E; and thehiuged tail' vezleeon neeteditothe J springhrakeiever toeppiy the brake tothe JOHN H. MILLER.

WILLIAM'H. BUR-N HAM.

Witnesses:

A. D. MALLORY,

FRED H. DOTY. 

